All CHP-5 Subject Domains:        HVAC Fundamentals          Electrical and Controls         Comfort and Airflow          Installation          Service

NATE Exam Prep - Comfort and Airflow

Each course below is a collection of modules,  which are listed as bullet points in the box to the right of each course.

You may enroll in any course and then access any module of interest that is listed in the bullet points. 

This is set up to allow you to study what you need at the course or module level. 

Air Properties and Measurement

121 HVACR Air Properties and Measurement (18 hours / Intermediate)  Written by Chris Compton

In this course we discuss heat energy, the conditions of human comfort, the psychrometric chart and plotting various air conditions upon it. Included is the top-rated eBook on the topic entitled, “Psychrometrics Without Tears” to help you digest the important concepts of air and how the various properties relate to each other. We complete the course by introducing the terms, concepts, measurements, and calculations of moving air. 

6 Modules:
  • Heat Energy and Comfort
  • Properties of Air
  • Psychrometrics
  • Total Heat In Air
  • Measuring a Heavy Invisible Moving Volume
  • Air Flow Measurement

(3 hours each)

Indoor Air Quality Basics

221 Indoor Air Quality Basics (18 hours / Foundation) 
Written by John Kreiger and Chris Dorsi

You already know it is your job to provide services related to the comfort of air temperatures inside your clients’ buildings. However, temperature management is not the only thing you need to know. This course will help you better understand the various elements of air quality, introduce the science of air quality, and give you some tips on how to identify and address the potential dangers of poor indoor air quality. The course does not address issues of allergies or chemically sensitive clients outside the basics of indoor air quality. You will learn indoor air properties, air flow, ventilation, moisture, and air filtration systems.

6 Modules:
  • IAQ Basics
  • Properties of Air
  • Air Flow Basics
  • Ventilation
  • Moisture Management
  • Air Filtration

(3 hours each)

Everything About Belts

239 HVACR Everything About Belts (3 hours / Foundation)

This is an entry-level course in a single module designed for those who need a basic understanding of drive belts and how they are utilized in residential and commercial HVACR systems. Types of drive belts, their selection, installation and maintenance are discussed in detail. The content of this course follows the recommended topics for basic study of HVACR. This course is NATE recognized for 3 hours of continuing education (CEHs) applicable to re-certification.

Systems: Load Calculations

122 HVACR Systems: Load Calculations (18 hours / Advanced)
Written by Phil Rains

Residential load calculations is a method to determine the heating and cooling BTU/H loads of structures prior to installing HVACR systems to meet those loads. You will need the required textbook: Air Conditioning Contractors of America (ACCA) Manual J, 8th Abridged Edition (MJ8-AE). This manual provides thorough instructions for estimating heat loss and heat gain for residential structures and helps to simplify complicated procedures that are often used on a variety of home applications. 122 Systems provides instruction for completing load calculations by hand, which is necessary prior to attempting any computerized load program. 

6 Modules:
  • Fundamentals of Load Calculations
  • Heat Loss of a Structure
  • Heat Gain of a Structure
  • Example Heat Loss and Heat Gain Calculation
  • Fundamentals of Equipment Selection
  • Regional Load Calculation Exercises

(3 hours each)

Air Distribution

123 Air Distribution (18 hours / Advanced) 
Written by Phil Rains

123 Air Distribution begins with an in-depth discussion of the fundamentals of residential air flow, then turns the focus to residential duct design utilizing the Air Conditioning Contractors of America (ACCA) Residential Duct Systems, Manual D (required textbook) and ACCA Manual T (optional textbook). System selection, system performance characteristics, duct materials, blower performance, air –side devices and duct sizing procedures are covered in detail.

6 Modules
  • Fundamentals of Air Flow
  • Air distribution Systems
  • Fundamentals of Air Conditioning Contractors of America (ACCA) Residential Duct Systems, Manual D
  • Application of Air Conditioning Contractors of America (ACCA) Residential Duct Systems, Manual D Duct Sizing Procedures
  • Application of Air Conditioning Contractors of America (ACCA) Air Distribution Basics for Residential and Small Commercial Buildings, Manual T
  • Selection and Sizing of Supply Air Outlets and Return Air Inlets using the ACCA Manual T and Air Distribution Equipment Manufacturer Performance Data for an Example Residential Structure

(3 hours each)

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